Cass County Auditor Dale Sunderman reports the last member of the Cass County Board of Supervisors who is eligible to file for re-election prior to the June 5th Primary, has done so. District 4 Supervisor Chuck Rieken, a Republican from Griswold, filed his re-election papers today (Wednesday). Other Republican County officers who have filed for re-election include: Dale Sunderman, of Atlantic; District 1 Supervisor Duane McFadeen, of Atlantic, as well as District 5 Supervisor Frank Waters, of Cumberland; and, Sheriff Darby McLaren. To date, no one has filed to run against those incumbents. The last day to file papers for the Primary, is March 28th.